My wife and I stayed at Wimonpak's apartment for 3 days and we loved it. It is conveniently situated near a BTS station and Saphan Pier, which is a perfect point to take a boat and discover the city and its highlights. You can also get to Suvarnabhumi airport by BTS train easily and cheaply. The apartment is comfortable, spacious enough for two people and has the basic amenities needed for a few days in Bangkok. It was perfectly clean and tidy.
As for Wimonpak, we could not meet her, yet she was always willing to contact, inform and solve any problems we might have. We were welcomed by her assistant who was kind too.
I would stay again at this place in the future, no doubt!